73696642072 has 8 divisors (see below), whose sum is σ = 138181203900. Its totient is φ = 36848321032.

The previous prime is 73696642057. The next prime is 73696642079. The reversal of 73696642072 is 27024669637.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73696642079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4606040122 + ... + 4606040137.

Almost surely, 2^73696642072 is an apocalyptic number.

It is an amenable number.

73696642072 is a deficient number, since it is larger than the sum of its proper divisors (64484561828).

73696642072 is a wasteful number, since it uses less digits than its factorization.

73696642072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212080265 (or 9212080261 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 52.

The spelling of 73696642072 in words is "seventy-three billion, six hundred ninety-six million, six hundred forty-two thousand, seventy-two".